Affiliation: | 1. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil Songpa-gu, Seoul, 138-736, South Korea 2. Division of Hematology and Medical Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, Gachon University School of Medicine, Incheon, South Korea 3. Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81, Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
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